Four-by-Twos

Some men in a pickup truck drove to a lumber yard. One of the men walked into the office and said, "We need some four-by-twos." The clerk asked, "You mean two-by-fours, don't you?" The man said, "I'll go check," and went back to the truck. He returned shortly and said, "Yeah, I meant two-by-four." "All right. How long do you need them?" The customer paused for a moment and said, "I'd better go check." After a while, he returned to the office and said, - "A long time. We're gonna build a house..."